空间光学敏感器像素位置精确测量技术发展现状

Current Situation of Pixel Position Accurate Measurement Technique for Spatial Optical Sensor

为提高空间指向测量仪器的精度,满足极高测量精度的任务需求,图像传感器像素位置偏差对星点质心定位精度的影响不容忽视.激光干涉法是目前国内外对像素位置偏差进行测量的主流方法.文章对图像传感器像素位置偏差的成因及影响进行说明,对国内外开展的激光干涉测量像素位置偏差技术进行介绍与整理,对像素位置偏差测量技术遇到的关键问题,技术难点及其未来发展趋势进行梳理和总结.

In order to improve the accuracy of spatial direction measuring instrument,and to meet the requirement of extremely high measurement accuracy,the influence of image sensor’s pixel displacement on centroiding accuracy is not negligible.The laser interferometry is a major method for measuring pixel displacement in current.The causes and effects of image sensor’s pixel displacement are described in this paper.The techniques of laser interferometry for measuring pixel displacement are introduced and analyzed.The key issues,difficulties and future development trends of the technique for pixel displacement measurement are summarized.